mysid

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my·sid

M0512750 (mī′sĭd)n. Any of various small, shrimplike, chiefly marine crustaceans of the order Mysida, the females of which carry their eggs in a pouch beneath the thorax. Also called opossum shrimp.
[From New Latin Mysis, Mysid-, type genus, from Greek musis, a closing, from mūein, to close the lips or eyes.]

mysid

(ˈmaɪsɪd) n (Animals) another name for the opossum shrimp